Point the cam at a strong light source and tild the camera slowly up and down in LV. Once the light source leaves the images there is a small area where you get the dark band. It happens both in LV and with taking the image regular.
It happens at the upper BUT also at the lower end of the image! Though stronger at the upper part. So it is not a shutter issue, nor a reflexion of the mirrors/AF something.
It feels like there is a shadow been thrown by something (mirror box?)
I have a good connection to Nikon Germany and talked to them The chief of the repair center did not know of the issue. I sent him the images and await a reply.
